Nofollow Your Links? How Long Until Google Notices

A WebmasterWorld thread has one SEO/Webmaster asking how long will it take for Google to show him the fruits of his efforts after nofollowing a bunch of links on his site.

He wanted to know how long will it take Google to notice the nofollows and see those results in the Google search results. He asked, "How long does it take for Google to notice that we added the nofollow and do we need to tell them somehow?"

For Google to notice the nofollow, all they need to do is crawl the page. For them to take action on the nofollow, by not counting that link, well, I am unsure how long it will take. Is it based on the recency of the crawl? Based on Google updating internal scores? Based on that signal going into a special index? Based on different algorithms, like Penguin, to rerun? Again, I am unsure.